We get it -- training is not always fun, and a big reason you might be training is to get better at your chosen sport or activity. Whether it's BJJ, running, mountain biking, or a team sport like football or baseball, getting stronger is essential to improving at your sport. But you have to practice skills and condition too. Many people make the mistake of trying to get better at everything at once, which never works, but with some basic principles and smart planning you can arrange your training blocks to increase your fitness AND your skills on the field.